US3778589A - Air operating cored wire - Google Patents
Air operating cored wire Download PDFInfo
- Publication number
- US3778589A US3778589A US00276779A US3778589DA US3778589A US 3778589 A US3778589 A US 3778589A US 00276779 A US00276779 A US 00276779A US 3778589D A US3778589D A US 3778589DA US 3778589 A US3778589 A US 3778589A
- Authority
- US
- United States
- Prior art keywords
- core
- aluminum
- magnesium
- percent
- weight percent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3603—Halide salts
- B23K35/3605—Fluorides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/368—Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3602—Carbonates, basic oxides or hydroxides
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2933—Coated or with bond, impregnation or core
Definitions
- This invention relates to electric arc welding electrodes and more particularly to a cored wire electrode for use in electric arc welding in air.
- Electrodes of this type usually contain halides, oxides, deoxidizers and in some cases alloying agents. While this type of electrodes have generally met with success, there is a need to improve the electrode so that the arc created between the electrode and workpiece is not so harsh or spatter producing.
- Another object is to provide such an electrode that when alloying agents, such as nickel, are added to the core material, welds having increased impact properties over prior art electrodes are obtained.
- a core wire electrode for use in electric arc welding in air can be produced which provides on extremely smooth arc, good slag peeling and improved impact properties in the weld metal.
- Such an electrode contains potassium oxalate which acts primarily as an arc stabilizer and magnesium and manganese oxide. It has been found that the ratio of manganese oxide to magnesium should be maintained between 0.5 to about 2.0 in the flux core material. If the manganese oxide is too high the are becomes unstable and the slag formed becomes to fluid. If the magnesium content is too high the arc becomes harsh with excessive spatter. When manganese oxide is too low the slag looses its viscosity and wetting actions is retarded. When magnesium is too low the are becomes unstable.
- Potassium oxalate additions improved arc stability and surprisingly also produced an essentially free feeling slag. It was found that potassium oxalate must be added in the amount of 0.5 to 2.5 percent weight of core.
- magnesium oxide acts as a slag former.
- Other slag formers such as titanium oxide, silicon dioxide or zirconium oxide can be substituted in whole or in part for the magnesium oxide but in any event the slag former should be present in the range of from about 2 to about weight percent of the core.
- Calcium fluoride is also present as a slag former.
- the amount of calcium fluoride present depends on the amount and type of other slag formers present in the flux.
- some of the calcium fluoride may be replaced with titanium dioxide.
- some calcium fluoride must be present in order to assist in the wetting action.
- the calcium fluoride is present in the range of from 35 to about 70 weight percent of the core.
- the calcium fluoride content may be reduced by substituting some titanium dioxide for example.
- Aluminum is present as a deoxidizer and nitride former. Aluminum may be present alone or as part of a magnesium-aluminum alloy. However the critical relationship of magnesium to manganese oxide must be maintained. It has unexpectedly been found that when the relationship of magnesium to manganese oxide is maintained, the manner in which aluminum is added to the flux is not as critical as has been found in other prior art electrodes. Aluminum may be present in the range of from 5 to about 20 weight percent of the core.
- low carbon ferromanganese also included in the flux core to provide the mechanical properties desired in the weld, however manganese or different level carbon ferromanganese may be substituted for the low carbon ferromanganese. However some manganese must be present in order to achieve the mechanical properties.
- Low carbon ferromanganese is preferably used and is preferably in the range of from 3 to 9 weight percent of the core.
- Nickel is also added to the flux core material in order to achieve high impact properties. Small additions of nickel expand the gamma loop and reduce growth of dendritic structure in the weld metal. It was found that nickel in the range of from 2 to about 5 weight percent of core produced the desired impact properties.
- a preferred wire A of the invention consists of a mild steel sheath containing the following ingredients given in weight percent of the core.
- the core ratio is 18 percent.
- the wire is modifled to consist of a mild steel sheath containing the following ingredients given in weight percent of the core.
- Another wire C of the invention was made using aluminum-magnesium alloy. This wire consisted of a mild steel sheath containing the following ingredients given in weight percent of the core with the core being 18 percent.
- Fe Powder MgO Potassium Oxalate MnO L.C. FeMn Mg-Al (alloy) (50% Mg) Fe powder was used as a filler to make a compact core because the Mg-Al alloy has a different specific density than aluminum or magnesium powder alone and therefore takes up less space in the core.
- Yet another wire D was made using aluminummagnesium alloy with nickel additions. This wire consisted of a mild steel sheath containing the following ingredients given in weight percent of the core with the core being 18 percent.
- EXAMPLE I A type B wire containing nickel was .made in three thirty-seconds in. diameter and used to make a multipass weld in three-fourths inch thick meld steel plate at 350 ampere and 26 volts with a travel speed of 15 I.P.M.
- EXAMPLE III Wire C was made into three thirty-seconds in. diameter wire and tested as in Example I with the following results:
- EXAMPLE IV Wire D was made into three thirty-seconds in. diameter wire and tested as in Example IV with the following results:
- the invention provides an electrode which produces almost 2 to 3 times the impact properties of prior art electrodes while producing a smooth low spatter arc. While the examples illustrate a cored wire having an 18 weight percent core ratio it should be understood marine core may be varied from about 16 to about 20 percent. Likewise the diameter of the cored wire may be varied from the three thirty-seconds in. diameter illustrated herein.
- a consumable wire electrode for electric arc welding in air comprising a hollow sheath of mild steel and a flux core comprised essentially of the following ingredients in core weight percent when the core is from about 16 to about 18 percent of the total electrode:
- a wire according to claim 1 including 2 to 5 core weight percent nickel.
- a consumable wire electrode for electric arc welding in air comprising a hollow sheath of mild steel and a flux core comprising the following ingredients in core weight percent when the core is 18 percent of the total electrode:
- a consumable wire electrode for electric arc welding in air comprising a hollow sheath of mild steel and a flux core comprising the following ingredients in core weight percent when the core is 18 percent of the total electrode:
- a consumable wire electrode for electric arc welding in air comprising a hollow sheath of mild steel and a flux core comprising the following ingredients in core weight percent when the core is 18 percent of the total electrode:
- a consumable wire electrode for electric arc welding in air comprising a hollow sheath of mild steel and a flux core comprising the following ingredients in core weight percent when the core is 18 percent of the total electrode:
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Nonmetallic Welding Materials (AREA)
- Fluid-Pressure Circuits (AREA)
- Arc Welding In General (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US27677972A | 1972-07-31 | 1972-07-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3778589A true US3778589A (en) | 1973-12-11 |
Family
ID=23058039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00276779A Expired - Lifetime US3778589A (en) | 1972-07-31 | 1972-07-31 | Air operating cored wire |
Country Status (10)
Country | Link |
---|---|
US (1) | US3778589A (it) |
JP (1) | JPS5143986B2 (it) |
BR (1) | BR7305753D0 (it) |
CA (1) | CA997257A (it) |
CH (1) | CH582041A5 (it) |
ES (1) | ES417367A1 (it) |
FR (1) | FR2194526B1 (it) |
GB (1) | GB1438857A (it) |
IT (1) | IT990057B (it) |
NO (1) | NO132949C (it) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3868487A (en) * | 1974-02-05 | 1975-02-25 | Sumitomo Metal Ind | Submerged arc welding method and flux cored wire for use in same |
US3868491A (en) * | 1973-02-08 | 1975-02-25 | Sumitomo Metal Ind | Submerged arc welding method and flux cored wire for use in same |
US4343984A (en) * | 1978-04-19 | 1982-08-10 | Union Carbide Corporation | Gas-shielded flux-cored wire electrodes for high impact weldments |
US20060096966A1 (en) * | 2004-11-08 | 2006-05-11 | Lincoln Global, Inc. | Self-shielded flux cored electrode for fracture critical applications |
US20070095807A1 (en) * | 2005-10-31 | 2007-05-03 | Lincoln Global, Inc. | Short arc welding system |
US20070108174A1 (en) * | 2004-04-29 | 2007-05-17 | Lincoln Global, Inc. | Gas-less process and system for girth welding in high strength applications |
US20070221643A1 (en) * | 2004-04-29 | 2007-09-27 | Lincoln Global, Inc. | Gas-less process and system for girth welding in high strength applications including liquefied natural gas storage tanks |
US7358459B2 (en) | 2004-03-01 | 2008-04-15 | Lincoln Global, Inc. | Electric arc welder system with waveform profile control |
US20100005847A1 (en) * | 2006-12-21 | 2010-01-14 | Arcmelt Company, Lc | Wire-Like Product with Composite Core and Process for Producing the Same |
US7812284B2 (en) | 2005-07-12 | 2010-10-12 | Lincoln Global, Inc. | Barium and lithium ratio for flux cored electrode |
US8704135B2 (en) | 2006-01-20 | 2014-04-22 | Lincoln Global, Inc. | Synergistic welding system |
US8759715B2 (en) | 2004-10-06 | 2014-06-24 | Lincoln Global, Inc. | Method of AC welding with cored electrode |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5464115A (en) * | 1977-10-28 | 1979-05-23 | Asahi Dow Ltd | Paper coating composition |
JPS5464114A (en) * | 1977-10-28 | 1979-05-23 | Asahi Dow Ltd | Paper coating composition |
JPS6230172A (ja) * | 1985-07-31 | 1987-02-09 | Asahi Chem Ind Co Ltd | カ−ペツト裏打ち用接着剤組成物 |
US4833296A (en) * | 1987-12-29 | 1989-05-23 | The Lincoln Electric Company | Consumable welding electrode and method of using same |
FR2669645A1 (fr) * | 1990-11-22 | 1992-05-29 | Castolin Sa | Procede de preparation de couches de forte adherence. |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3177340A (en) * | 1961-11-24 | 1965-04-06 | Soudure Electr Autogene Sa | Flux-cored electrode and process of welding |
US3453142A (en) * | 1966-03-14 | 1969-07-01 | Air Reduction | Welding electrode and composition |
US3560702A (en) * | 1968-03-02 | 1971-02-02 | Kobe Steel Ltd | Composite electrode for consumable electrode arc welding process |
US3573426A (en) * | 1966-10-31 | 1971-04-06 | Murex Welding Processes Ltd | Arc welding |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3491225A (en) * | 1967-03-15 | 1970-01-20 | Matsushita Electric Ind Co Ltd | Special welding electrodes |
US3566073A (en) * | 1968-04-03 | 1971-02-23 | Lincoln Electric Co | Out-of-position automatic cored welding electrode |
-
1972
- 1972-07-31 US US00276779A patent/US3778589A/en not_active Expired - Lifetime
-
1973
- 1973-06-25 CA CA174,831A patent/CA997257A/en not_active Expired
- 1973-07-30 JP JP48085058A patent/JPS5143986B2/ja not_active Expired
- 1973-07-30 GB GB3610573A patent/GB1438857A/en not_active Expired
- 1973-07-30 CH CH1106873A patent/CH582041A5/xx not_active IP Right Cessation
- 1973-07-30 BR BR5753/73A patent/BR7305753D0/pt unknown
- 1973-07-30 ES ES417367A patent/ES417367A1/es not_active Expired
- 1973-07-30 IT IT51713/73A patent/IT990057B/it active
- 1973-07-30 NO NO3056/73A patent/NO132949C/no unknown
- 1973-07-30 FR FR7327822A patent/FR2194526B1/fr not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3177340A (en) * | 1961-11-24 | 1965-04-06 | Soudure Electr Autogene Sa | Flux-cored electrode and process of welding |
US3453142A (en) * | 1966-03-14 | 1969-07-01 | Air Reduction | Welding electrode and composition |
US3573426A (en) * | 1966-10-31 | 1971-04-06 | Murex Welding Processes Ltd | Arc welding |
US3560702A (en) * | 1968-03-02 | 1971-02-02 | Kobe Steel Ltd | Composite electrode for consumable electrode arc welding process |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3868491A (en) * | 1973-02-08 | 1975-02-25 | Sumitomo Metal Ind | Submerged arc welding method and flux cored wire for use in same |
US3868487A (en) * | 1974-02-05 | 1975-02-25 | Sumitomo Metal Ind | Submerged arc welding method and flux cored wire for use in same |
US4343984A (en) * | 1978-04-19 | 1982-08-10 | Union Carbide Corporation | Gas-shielded flux-cored wire electrodes for high impact weldments |
US7358459B2 (en) | 2004-03-01 | 2008-04-15 | Lincoln Global, Inc. | Electric arc welder system with waveform profile control |
US20070108174A1 (en) * | 2004-04-29 | 2007-05-17 | Lincoln Global, Inc. | Gas-less process and system for girth welding in high strength applications |
US20070221643A1 (en) * | 2004-04-29 | 2007-09-27 | Lincoln Global, Inc. | Gas-less process and system for girth welding in high strength applications including liquefied natural gas storage tanks |
US9333580B2 (en) | 2004-04-29 | 2016-05-10 | Lincoln Global, Inc. | Gas-less process and system for girth welding in high strength applications |
US8759715B2 (en) | 2004-10-06 | 2014-06-24 | Lincoln Global, Inc. | Method of AC welding with cored electrode |
US9956638B2 (en) | 2004-10-06 | 2018-05-01 | Lincoln Global, Inc. | Electric arc welder for AC welding with cored electrode |
US20060096966A1 (en) * | 2004-11-08 | 2006-05-11 | Lincoln Global, Inc. | Self-shielded flux cored electrode for fracture critical applications |
US7812284B2 (en) | 2005-07-12 | 2010-10-12 | Lincoln Global, Inc. | Barium and lithium ratio for flux cored electrode |
US20070095807A1 (en) * | 2005-10-31 | 2007-05-03 | Lincoln Global, Inc. | Short arc welding system |
US7842903B2 (en) | 2005-10-31 | 2010-11-30 | Lincoln Global, Inc. | Short arc welding system |
US8704135B2 (en) | 2006-01-20 | 2014-04-22 | Lincoln Global, Inc. | Synergistic welding system |
EP1854573A1 (en) * | 2006-05-08 | 2007-11-14 | Lincoln Global, Inc. | Apparatus and method for short-circuit arc welding employing a self-shielded cored electrode |
US20100005847A1 (en) * | 2006-12-21 | 2010-01-14 | Arcmelt Company, Lc | Wire-Like Product with Composite Core and Process for Producing the Same |
Also Published As
Publication number | Publication date |
---|---|
JPS5143986B2 (it) | 1976-11-25 |
FR2194526B1 (it) | 1976-06-18 |
BR7305753D0 (pt) | 1974-06-27 |
CH582041A5 (it) | 1976-11-30 |
DE2338611A1 (de) | 1974-02-21 |
FR2194526A1 (it) | 1974-03-01 |
DE2338611B2 (de) | 1975-11-20 |
GB1438857A (en) | 1976-06-09 |
NO132949C (it) | 1976-02-11 |
IT990057B (it) | 1975-06-20 |
JPS4944948A (it) | 1974-04-27 |
CA997257A (en) | 1976-09-21 |
NO132949B (it) | 1975-11-03 |
ES417367A1 (es) | 1976-09-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: L-TEC COMPANY, NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:UNION CARBIDE CORPORATION;REEL/FRAME:004436/0460 Effective date: 19850712 Owner name: L-TEC COMPANY, 666 THIRD AVENUE, NEW YORK, NY 100 Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:UNION CARBIDE CORPORATION;REEL/FRAME:004436/0460 Effective date: 19850712 |
|
AS | Assignment |
Owner name: SECURITY PACIFIC BUSINESS CREDIT INC., A DE CORP. Free format text: SECURITY INTEREST;ASSIGNOR:L-TEC COMPANY A NY LIMITED PARTNERSHIP;REEL/FRAME:004445/0860 Effective date: 19850716 |
|
AS | Assignment |
Owner name: L-TEC COMPANY, SOUTH CAROLINA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:UNION CARBIDE CORPORATION, A CORP OF NY.;REEL/FRAME:004610/0384 Effective date: 19860828 Owner name: L-TEC COMPANY, EBENEEZER ROAD, POST OFFICE BOX F-6 Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:UNION CARBIDE CORPORATION, A CORP OF NY.;REEL/FRAME:004610/0384 Effective date: 19860828 |
|
AS | Assignment |
Owner name: ESAB AB, A SWEDISH CORP., SWEDEN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:L-TEC COMPANY;REEL/FRAME:005491/0029 Effective date: 19901030 |